I've managed to track down 4.11 gears...hopefully

[swordfish]

The R&Ps for the rear D44 changed after 2007. The bolt holes for the pinion gear are different (went from 7/16" to 1/2"). Please confirm which you have if you attempt this mod. You may need a 2007 R&P for the rear.

[WHHEMI]

You could also try JT diff and gear in the US TJMicaela got his 4.1 ratios from them

[swordfish]

Originally Posted by greenjk

You could also try JT diff and gear in the US TJMicaela got his 4.1 ratios from them

Dammit! I wish I had found these guys before.

Oh well, what can you do?

[superchicken]

We need this too. keep us posted.

[EugeJK]

Originally Posted by swordfish

...I have ordered these parts and am 95% sure they will fit. However as I have not physically done the install yet I can't guarantee anything...

I do concur everything Swordfish said. All the parts numbers are correct and he's 100% right.
Got the change done at dealership from 3.21 to 3.73 for CRD with all OEM parts (+ OEM Trac-Lok in D44). Bought parts cheap and shipped from the US. Was tempted to go 4.1, but since I run stock tyres I thought for manual it's overkill.

[IZN]

Originally Posted by EugeJK

I do concur everything Swordfish said. All the parts numbers are correct and he's 100% right.
Got the change done at dealership from 3.21 to 3.73 for CRD with all OEM parts (+ OEM Trac-Lok in D44). Bought parts cheap and shipped from the US. Was tempted to go 4.1, but since I run stock tyres I thought for manual it's overkill.

How do you feel the car with the 3.73? I also think 4.1 would be overkill in my case.
I would really appreciate if you could let me know the cost for the pars & labour and the part numbers?
PM me if you prefer tks

[EugeJK]

Originally Posted by IZN

How do you feel the car with the 3.73? I also think 4.1 would be overkill in my case.
I would really appreciate if you could let me know the cost for the pars & labour and the part numbers?
PM me if you prefer tks

The car feels very adequate on 32". The 3.21 was only good for highway cruising in 5th or 6th. No fuel consumption increase whatsoever. City start-stop - 11.5ltr, combined - 9ltr, highway - 7ltr.

The local dealership in Adelaide insisted on replacing all the bearings, seals, shims and slingers to keep the warranty on the diffs. I bought the parts directly from the US. Because they were pulling out the rear diff case anyway, I also bought OEM Trac-Lok for US$222 to put back instead. All the new parts cost me AU$1400 shipped with Trac-Lok (without 3.73 R&P gears). Chrysler Australia asked ~$5000 for the parts. I bought low kms 3.73 R&P gears from a guy on jk-forum.com for AU$200 shipped. There're plenty 3.73s there. The dealership quoted $1100 for labour and consumables for both axles. It’s 2 times cheaper than at local diff workshops, and I got no idea why there was such a difference. So the total was $2700. Somewhat in the end I got the US option - manual with 3.73 diff and Trac-Lok.